This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2003, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 1139 | Thompson, Joanne | SA | Merit | The Arts and the Community | |
| 1140 | Thompson, Zhaan Kate | SA | Merit | Physical Education | |
| 1141 | Thomson, Katie | SA | Merit | Biology | |
| 1142 | Thomson, Katie | SA | Merit | English Studies | |
| 1143 | Thomson, Katie | SA | Merit | Studies of Religion | |
| 1144 | Thomson, Katie | Tenison Woods College | Mount Gambier | Australian Student Prize | |
| 1145 | Thorndike, Christopher Darryl | SA | Merit | Furniture Construction | |
| 1146 | Thwin, May | SA | Merit | Legal Studies | |
| 1147 | To, Chieu-Duong | SA | Merit | Chemistry | |
| 1148 | To, Chieu-Duong | SA | Merit | French (Continuers) | |
| |
|||||
| 1149 | To, Chieu-Duong | SA | Merit | Mathematical Studies | |
| 1150 | To, Chieu-Duong | SA | Merit | Visual Arts Studies | |
| 1151 | To, Chieu-Duong | Annesley College | Wayville | Australian Student Prize | |
| 1152 | To, Minh-Son | SA | Merit | Chemistry | |
| 1153 | To, Minh-Son | SA | Merit | Mathematical Studies | |
| 1154 | Tochihara, Yuka | SA | Merit | Japanese (Continuers) | |
| 1155 | Togami, Chika | SA | Merit | Japanese (Continuers) | |
| 1156 | Tolley, Sarah Anne | SA | Merit | Accounting Studies | |
| 1157 | Toms, Carmel Harriet | SA | Merit | Outdoor Education | |
| 1158 | Townley, Erin June | SA | Merit | Food and Hospitality | |
| 1159 | Tran, Alyce | SA | Merit | English Studies | |
| 1160 | Tran, Alyce | SA | Merit | Visual Arts Studies | |
| 1161 | Tran, An Nhien Thi | SA | Merit | Biology | |
| 1162 | Tran, Hong Nhung Lynda | SA | Merit | Religions in Australia | |
| 1163 | Tran, Lenny | SA | Merit | Religions in Australia | |
| 1164 | Tran, Tuan Quoc | SA | Merit | English as Second Language Studies | |
| 1165 | Trento, Kirsty Marie | SA | Merit | Musicianship | |
| 1166 | Trento, Kirsty Marie | SA | Merit | Performance Special Study | |
| 1167 | Trento, Kirsty Marie | SA | Merit | Solo Performance | |
| 1168 | Trinkle, Rebecca Martha | SA | Merit | Biology | |
| 1169 | Trudgen, Kelly Rose | SA | Merit | Economics | |
| 1170 | Truong, David Vinh Huy | SA | Merit | Information Technology Studies | |
| 1171 | Tsantes, Stamatoula | SA | Merit | Information Technology | |
| 1172 | Tsetsang, Tashi Dolma | SA | Merit | English as Second Language Studies | |
| 1173 | Tsiboukis, Nicole | SA | Merit | Biology | |
| 1174 | Tsiboukis, Nicole | SA | Merit | Mathematical Applications | |
| 1175 | Tu, Xiao Jing (Jenna) | SA | Merit | Chemistry | |
| 1176 | Tu, Xiao Jing (Jenna) | SA | Merit | Mathematical Studies | |
| 1177 | Tu, Xiao Jing (Jenna) | SA | Merit | Physics | |
| 1178 | Tu, Xiao Jing (Jenna) | SA | Merit | Specialist Mathematics | |
| 1179 | Tu, Xiao Jing (Jenna) | Norwood Morialta High School | Magill | Australian Student Prize | |
| 1180 | Tuazon, Sly Nisan | SA | Merit | Solo Performance | |
| 1181 | Tulloch, Benjamin David | SA | Merit | German (Continuers) | |
| 1182 | Tulloch, Benjamin David | SA | Merit | Mathematical Studies | |
| 1183 | Turnbull, Lisa Nicole | SA | Merit | Biology | |
| 1184 | Turnbull, Lisa Nicole | SA | Merit | Child Studies | |
| 1185 | Turner, Holly Ann | SA | Merit | Physical Education | |
| 1186 | Turner, Jessica Louise | SA | Merit | English Studies | |
| 1187 | Turner, Katherine Sara | SA | Merit | Business Studies | |
| 1188 | Turvey, Tina Louise | SA | Merit | The Arts and the Community | |